CONTENTS: Foreword, Preface, List of Abbreviations, Introduction, Chapter 1: Ecumenical Missiology Introduction, 1.1. Meaning of Ecumenical Missiology 1.2. Mission as Common Witness, 1.3. Biblical Foundation of Ecumenism Concluding Remark, Chapter 2: History of Christianity in Mizoram Introduction, 2.1. A Brief History of Christianity in Mizoram, 2.2. A Brief History of Ecumenism Among the Churches in Mizoram Concluding Remark, Chapter 3: Causes of Disunity Introduction, 3.1. Causes of Disunity, 3.2. Theological and Structural Factors Concluding Remark, Chapter 4: Hindrances to Unity and Effects of Disunity Introduction, 4.1. Hindrances to Unity, 4.2. Effects of Disunity, Concluding Remark, Chapter 5: Ecumenical Missiology as the Challenge of Different Churches in Mizoram, Introduction, 5.1. Ecumenical Missiology as the Challenge of Different Churches in Mizoram, Concluding Remark, General Conclusion, Bibliography.